1990 Johnson Ocean Pro 200 HP Help

[Bry21317]

A friend of mine brought his boat over last night, as it needs some work to be done to it.

It was running pretty good 2 yrs ago, but he said it would cut out on him. I am thinking the carbs are quite gummed up. This boat was also a Salt water boat as he lived down on the coast for a while and used it in the ocean. The boat is a 19 foot Cresliner. I think its like a 70 something, but it has a really good V and handles waves like a champ in the ocean. He did not want to get rid of it, so he had a 200 hp Johnson Ocean Pro put on it, and it ran like a scalded dog. I think it was only rated for like a 150 OB, but he had the transom reinforced and redid alot of the Flooring and all.

I started to look at it a little bit last night, and hes also having a problem with the Tilt/Trim. The relays will click, and I checked power all the way to the motor and the up and down wires were both getting power. I then checked the grounding, against the Pump itself to see if possilby was not grounded good, as it is a salt water boat, and it had a good ground. He had the Trim Motor replaced 2 yrs ago and he said that it gradually went out on him. He was not in the mood to mess with it last year and to busy with his new Remodeling company. So the boat has just sat, hes wanting to get it all running now, so we have quite a few things to do to this engine to get it back running.

Here is what I am going to have to do for sure.

1) Impeller- No telling when this was replaced
2) Clean/install new Carb Kits- Might be a real PITA as there are 6 carbs on this motor.
3) Try to figure out the Tilt/Trim Issue.

I know he has the manual, and is going to bring it to me, so that I can start reading it.

Thanks,
Bryan

 

[tashasdaddy]

Re: 1990 Johnson Ocean Pro 200 HP Help

do the impeller while you have the carbs off. makes getting to the shift linkage much easier, also do not turn the shift rod, that will change the height, and it will not go into gear properly. trim issure, jump the relays, that will rule out the relays. carbs are not that hard, just don't mix up the parts, do one, and always keep one together, incase you get lost.

being it is a 1990 i would replace all the fuel lines, with alcohol resistant fuel line.

then he needs to verify the oil mixing pump is working correctly, fill the oil tank, prime it, then calculate how much oil is being used, to the amount of fuel being used. he should also premix his fuel 50:1 until he is convinced the pump is working properly. premixing will not hurt the motor, that is what the do during the break in period.

also discard (properly) any existing fuel in the tank. change fuel/ water separating filter, if it does not have one, install one.

 

[Bry21317]

Re: 1990 Johnson Ocean Pro 200 HP Help

Thanks Tashasdaddy,
I had just found your Top Secret post also and read through that information. I do not have the Manual yet from him, but as soon as I get it, I will be reading it all.

I always do this, I have never worked on a Johnson before though. I have worked on a Force and then Mercruiser I/O boats. So this one is new to me.

Do the impeller while you have the carbs off. makes getting to the shift linkage much easier, also do not turn the shift rod, that will change the height, and it will not go into gear properly.

Is this the same as on a Force or Alpha drive where you put it in Forward Gear then pull a small pin? Why would it make it easier to get ot the Shift Linkage while the Carbs are off? Now forgive me, as I stated I do not yet have the manual and just was able to look around the motor a little bit last night.

Trim issure, jump the relays, that will rule out the relays.

Would I still be getting a solid 12v at the motor on the Up and down leads if the relays were bad? I can hear them both Clicking on and off? What would I jump them from or with? Could I just take 12v straight from the battery and run it straight to the pump motor to see if it will go up or down?

Carbs are not that hard, just don't mix up the parts, do one, and always keep one together, incase you get lost.

I got ya on this. how bad is syncing and linking these carbs? I know that on my old 88 Force 125, it was a pain to sync up the 2 carbs, much less 6 on this engine. I plan on trying to get a few off and doing them one at a time. Once I am done with them, put them back on where they came off, then I should be pretty good at them after 2.

being it is a 1990 i would replace all the fuel lines, with alcohol resistant fuel line.

All Fuel lines were replaced 2 summers ago, when he had a mechanic work on it for him.

then he needs to verify the oil mixing pump is working correctly, fill the oil tank, prime it, then calculate how much oil is being used, to the amount of fuel being used. he should also premix his fuel 50:1 until he is convinced the pump is working properly. premixing will not hurt the motor, that is what the do during the break in period.

I think he said it mixed in the Gas tank now. I know that he said he premixes it. He was going to bring me a small portable tank with the gas/oil mixed in it to use as a pure/clean source of fuel.

also discard (properly) any existing fuel in the tank. change fuel/ water separating filter, if it does not have one, install one.

There is a new Water Seperating Filter on the Line. The Fuel filters will be replaced and he says there is no gas in the tank now. So we should be good to go on this.

I was also gonna Pull the Spark Plugs out and spray Deep Creep down in each plug hole to make sure that the cylinders had some lube in there before Trying to start it. I would also replace the Spark Plugs to make sure that everything is good to go, regrease the Prop shaft and remove the lower Unit Oil and replace with new Oil.

Once I get this all done, I think it should be good to go, then he can have fun at cleaning the outside of his boat lol.

Bryan

 

[tashasdaddy]

Re: 1990 Johnson Ocean Pro 200 HP Help

J?E motors are easier, make more common sense.

the shift linkage connector is back in the center under the carbs.

sure just jump off a battery, ground the motor to neg post, and jump to the pos side of the motor.

 

[tashasdaddy]

Re: 1990 Johnson Ocean Pro 200 HP Help

linc n sinc is covered set by set in the manual, if you do not adjust the connectors between the carbs, when you remove them, they should stay in sinc. then you just have to adjust the idle speed.

i always use a aux tank. for testing.

grease all the zerc fittings on the motor, tilt it up, there is one or two under there.

 

[daselbee]

Re: 1990 Johnson Ocean Pro 200 HP Help

TD...that's not the way I manually jump/operate a trim and tilt.

There are two wires coming to the engine from the T&T.
One is blue, the other green. They are large gauge wires, probably #12 or so, because they handle lots of current.
You must separate the connector, and apply battery power directly to the two terminals inside the connector. The trim will go up with one polarity of the power applied, and if you reverse the polarity, it will go down.

"sure just jump off a battery, ground the motor to neg post, and jump to the pos side of the motor."
I don't understand that quote.

I have not been able to get one to work by doing as above suggested.

Let me say that I have only worked on 1994-2000 big V6 T&T units...Fastrack I think they are called. I believe this is what you also have on your 1990 200.

For what it's worth.

 

[Bry21317]

Re: 1990 Johnson Ocean Pro 200 HP Help

Thanks for the Input Guys.

This is a Big V6 Motor for sure, but an earlier model. When I was testing wtih a Test Light both of these Green and Blue cables had 12 volts on them. When I had my buddy push the switch for the Trim up, it lit up One, I forgot the color now, and down lit up the other with 12 volts.

Each Relay Would lick as it should and it opened and put 12 volts through to the correct wire.

Its gonna be raining here till Sat it looks like, so I will have time to get and read through the manual..

Bryan

 

[tashasdaddy]

Re: 1990 Johnson Ocean Pro 200 HP Help

ok it is a 2 wire tilt motor my mistake, sorry.

 

[daselbee]

Re: 1990 Johnson Ocean Pro 200 HP Help

No, TD you are by far the expert...I was a bit confused and wondered just exactly was going on.....to me I was wondering if there were truly two different electrical designs on the tilt/trim units.

So, that done... I am intrigued by the statement..."Each Relay Would lick as it should and it opened and put 12 volts through to the correct wire."

Gotta remember....you can ENERGIZE a circuit with 12v, but if there is no path to the return...(GND)...you get no current flow, and no correct operation of the circuit. I could pop 120v DC on that line...and nothing would happen, because your tilt trim motor is probably open, not allowing any current flow to run the motor and thus the pumps.

Your explanation that the relays alternately energize the circuits to 12v one polarity then the other pinpoints it to an open tilt /trim motor, OR the very very close immediate wiring to that motor.